Nobody likes the guy who takes pick-up games way too seriously—the guy who stiff-arms you in the face in flag football or throws elbows while boxing out in basketball. London mayor Boris Johnson is somehow even worse, bringing an altogether unnecessary level of intensity to a game played with children not once but twice now.

The clip above shows Johnson during his current trip to Japan. His desire to score in this fun little game of rugby is so strong that he flattens a 10-year-old in the process.

Just turn it down a couple notches, buddy, before someone actually gets hurt.